Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Control system of step drives of blades of wind power plant E.V. KAPLYA The block diagram of pitch angle control wind rotor (PACWR) with the automated step servo-driver of blades ensuring the stabilization of an angular velocity of rotation of wind rotor and standard frequency of a current on an exit of a generator is composed. The method of calculation of a required amount of pitches of a rotor of a step motor eliminating accumulation of angular errors of positioning of blades is developed. Keywords: wind power plant, wind rotor, pitch angle of blade, angular velocity, step motor. Contacts: E-mail:ev-kaple@yandex.ru Pp. 16-20.